2026-10-06T07:28:48Z https://api.figshare.com/v2/oai

oai:figshare.com:article/34003056 2026-09-26T14:22:01Z category_26968 category_25915 category_25918 category_25927 category_25930 category_25906 item_type_3 month_year_09_2026

Supplementary Information/Data Tables: A snapshot of microplastic distributions across discrete sedimentary environments of an Arctic valley-fjord system Jake Martin (25110447) Surface water quality processes and contaminated sediment assessment Geomorphology and earth surface processes Glaciology Quaternary environments Regolith and landscape evolution Physical oceanography microplastic compound pollutants An understanding of patterns of microplastic loss and sedimentation is important for identifying microplastic hotspots and their evolution. Here we show accumulation of microplastics in an anthropogenically impacted glacier-valley-fjord system in Svalbard, Norway. Microplastics were found in the snowpack overlying the glaciers (1.2 ± 1.6 n L-1), inside an englacial meltwater channel (125.9 ± (-) n L-1), and in end moraine (9.6 ± (-) n Kg-1) and fjord sediment (38.7 ± 11.1 n Kg-1). Microplastic fragments dominated the supraglacial snowpack and marine sediment, while fibres dominated the englacial meltwater channel and moraine. Microplastics were not observed in riparian and coastal environments above the limit of detection. Pooling samples across compartments overcame observed microplastic patchiness. Microplastic supply, environmental energy regimes, and natural sedimentation rates appear to be important factors in determining zones of heightened microplastic concentration. Contextualization of landscape histories is therefore needed to link microplastic observations to general pollution trends. 2026-09-26T14:22:01Z Dataset Dataset 10.6084/m9.figshare.34003056.v1 https://figshare.com/articles/dataset/Supplementary_Information_Data_Tables_A_snapshot_of_microplastic_distributions_across_discrete_sedimentary_environments_of_an_Arctic_valley-fjord_system/34003056 CC BY 4.0